”Christ predicted that he would be raised from the dead ‘the third day’ (Mt. 16:21). However, he also declared that he would rise ‘after three days’ (Mk. 8:31). To complicate the seeming difficulty, Jesus further stated that he would be in the grave ‘three days and three nights’ (Mt. 12:40). These references, which some see as disharmonious, puzzle sincere Bible students. What is the explanation?”
The solution lies in understanding how the Jews measured time. According to a common Hebrew idiom, any part of a day could be counted as the whole day and night.[1] There are many examples of such usage in the Scriptures.
Clearly there was flexibility in the Hebrew mode of expressing time.
One must understand, therefore, how the Israelite people spoke of time. The New Testament does not contradict itself with reference to how long Jesus was in the tomb.
It is extremely significant to observe that though the Jews used every imaginable device by which to ensnare Christ, no enemy ever charged the Lord with error in reference to the duration of his entombment! They understood the common chronological idiom and had no problem with the Lord’s mode of expression.
The Scriptures pass every test of historical credibility.
1 See John Lightfoot, Commentary on the New Testament from the Talmud & Hebraica, II, pp. 210-211.